docs: def _warn(self, problem, kind=BrotherQLRasterError):
          """
          Logs the warning message `problem` or raises a
          `BrotherQLRasterError` exception (changeable via `kind`)
          if `self.exception_on_warning` is set to True.
  
          :raises BrotherQLRasterError: Or other exception \
              set via the `kind` keyword argument.
          """
          if self.exception_on_warning:
              raise kind(problem)
          else:
              logger.warning(problem)